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Configuration Guide - Virtualization

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of virtualization, including stack and SVF.
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Configuring a Stack MAC Address Switching Delay

Configuring a Stack MAC Address Switching Delay


A stack is a logical switch, in which all member switches have the same MAC address. If a member switch is moved to another node on the network, its MAC address may conflict with the stack MAC address. To prevent MAC address conflicts in such conditions, configure a stack MAC address switching delay according to situations on your network. If the MAC address of the switch that leaves the stack is the stack MAC address and the switch does not join the stack within the delay time, the stack MAC address changes to the MAC address of the master switch.

  • After you run the set system mac-address slot slot-id command to set a fixed stack MAC address, the MAC address switching delay becomes invalid.

  • If a stack functions as a Layer 3 gateway, it is recommended that the stack MAC address not be switched.


  1. Run the system-view command to enter the system view.
  2. Run the stack command to enter the stack management view.
  3. Run the set system mac-address switch-delay { delay-time | immediately } command to configure a stack MAC address switching delay.

    By default, the stack MAC address switching delay is 10 minutes. If you specify immediately in the command, the stack MAC address will change immediately after the switch with the stack MAC address leaves the stack. If you set delay-time to 0, the stack MAC address does not change.

  4. Run the commit command to commit the configuration.
Updated: 2019-04-03

Document ID: EDOC1100075367

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